Windows 10: How do I make the SSD my main hard drive with the HHD still on my computer?

I just went out and bought myself an HDD to help with the lag even when I have an Alienware R11. My PC came with 8GB of memory, so I also bought 2 16GB memory extenders. I am very paranoid with having viruses since getting the new installs, so I wiped the pc clean. I want to change the default drive to the SSD so if someone could help me that would be amazing. I have looked online, but it doesn't look like anyone else is having this issue.

:)

 

HHD to SSD

Get the SSD and a way to connect to the computer and clone it from the HHD.

There are a number of free programs to use to do the clone. I used EaseUS toDoBacklUp.

 

Replace HHD with SSD

I have a a computer that I want to install a ssd in and use the current hhd for the file storrage. The version of windows 10 when I bought my computer was 1903. I made a recovery USB for it and have not backed up any of the updates. If I put a ssd in
and use my backup will I be able to get all the updates that I now have again? I do not want to mirror my current HHD but use it for back up and get rid of the registry on it because I have, a program on it that I cannot delete and believe it is ransomware.

 

HHD to SSD

my HHD is running slow and i want to change to SSD, I previously upgrade from Win7 to Win10 what can i do